scholarly journals Use of a microprocessor controlled coal analyzer to evaluate mine roadway dust samples

1984 ◽  
Author(s):  
D J Kennedy ◽  
G Bonnell
Keyword(s):  
Mine Roadway ◽  
Roadway Dust

Analysis on Coupling of Laminated Elastic Beam Element and the Shock Pressure of Surrounding Rock of Roadway

2012 ◽  
Vol 505 ◽  
pp. 429-433
Author(s):  
Jin Wei ◽  
Zi Ming Kou ◽  
Wang Wang
Keyword(s):  
Characteristic Curve ◽  
Impact Resistance ◽  
Elastic Beam ◽  
Present Situation ◽  
Beam Element ◽  
Tunnel Support ◽  
Beam Elements ◽  
Mine Roadway ◽  
Safety Production ◽  
High Support

Based on the rock pressure tunnel support present situation carries on the analysis, the laminated elastic beams of high support ability and impact resistance was designed.Therefore, through assumptions and establishment of mathematical model, and the application of viscoelastic beam dynamics equation, deformation and energy absorption of the laminated elastic beam elements,under the condition of rock burst, was deduced. According to the load - displacement characteristic curve, the coupling of laminated elastic beam elements and rockburst in coal mine roadway was analysed. This can provide a new method in the field of safety production of mining and roadway.

Characterisation of the Tunnel-Channel Wave around a Coal Mine Roadway Based on Synthetic and Real Data

2020 ◽  
Author(s):  
R. Czarny ◽  
M. Malinowski ◽  
M. Ćwiękała ◽  
S. Olechowski ◽  
Z. Isakow ◽  
...  
Keyword(s):  
Coal Mine ◽  
Real Data ◽  
Mine Roadway ◽  
Channel Wave ◽  
Tunnel Channel

Chapter 11 Coal mining subsidence in the UK

2020 ◽  
Vol 29 (1) ◽  
pp. 291-309 ◽  
Author(s):  
Laurance Donnelly
Keyword(s):  
Coal Mining ◽  
Longwall Mining ◽  
Ground Surface ◽  
Mining Subsidence ◽  
Ground Movement ◽  
Working Face ◽  
Mine Roadway ◽  
Coal Mining Subsidence ◽  
The Uk

AbstractOne of the geohazards associated with coal mining is subsidence. Coal was originally extracted where it outcropped, then mining became progressively deeper via shallow workings including bell pits, which later developed into room-and-pillar workings. By the middle of the 1900s, coal was mined in larger open pits and underground by longwall mining methods. The mining of coal can often result in the subsidence of the ground surface. Generally, there are two main types of subsidence associated with coal mining. The first is the generation of crown holes caused by the collapse of mine entries and mine roadway intersections and the consolidation of shallow voids. The second is where longwall mining encourages the roof to fail to relieve the strains on the working face and this generates a subsidence trough. The ground movement migrates upwards and outwards from the seam being mined and ultimately causes the subsidence and deformation of the ground surface. Methods are available to predict mining subsidence so that existing or proposed structures and land developments may be safeguarded. Ground investigative methods and geotechnical engineering options are also available for sites that have been or may be adversely affected by coal mining subsidence.

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